Extraction is a chemistry way to extract oil from soybean . It makes use of Solvent Extraction Principles ,which makes Number 6 solvent oil come into soybean cake .Then oils and fats is dissolved from Mixed oil.

How to extact oil from the cake ?

Material embryos→Extraction→Wet

meal→Evaporation→Cooling→Product meal

packing ↓Mixed oil→Filter→Negative pressure evaporation →

Crude oil ↓ Solvent recovery

The process of oil extraction

1. The oil pre-pressed will be put in the leaching plant .Then we add NO.6 solvent oil .let oil commbined with solvent .The temperature of solvent should be 55-60degree . Then by heating ,through the frist steam pipe ,second steam pipe ,then stripping tower .the solvent will come out from the cake with oil .We heat them , the solvent will change to gas to go ,lefting the oil .

2. As the solvent with some oil and water ,in order to recycle solvent ,we must make it cooling .So we need the condenser .The condenser change solvent to liquid . we seprate the solvent ,oil ,water .And we can recycle solvent .

Factors of affecting extracting oil

Performance of Pre-pressed cake structure and moisture of oil cake

Extraction temperature Less than about 5 degrees of initial boiling point